Copper-sulfur bulk concentrate ore grinding process combining small steel forging ratio with long conical cyclone

Abstract

The invention discloses a copper-sulfur bulk concentrate ore grinding process combining the small steel forging ratio and a long conical cyclone. According to the process, copper-sulfur bulk concentrate is conveyed to grading equipment to be graded through a sand pump, the grading particle size is 0.074 mm, products of -0.074 mm particle size enter a later sorting procedure directly, and sand setting products of +0.074 mm particle size enter a copper-sulfur separating ore grinding machine to be subjected to ore grinding; ore grinding products obtained by conducting ore grinding on the sand setting products enter a pump pool of the copper-sulfur bulk concentrate and then are transferred to the grading equipment to be graded through the sand pump. The products of -0.074 mm particle size enters the later sorting procedure directly, and the sand setting products of +0.074 mm particle size enter the copper-sulfur separating ore grinding machine again to be subjected to ore grinding, and in this way, closed circuit ore grinding is completed by conducting the procedures circularly till ore pulp of required fineness is obtained. Small steel forgings serve as an ore grinding medium of the ore grinding machine. According to the copper-sulfur bulk concentrate ore grinding process combining the small steel forging ratio with the long conical cyclone, the ore grinding efficiency and the grading efficiency can be substantially improved, the investment is low, and the energy consumption is low.

Description

technical field [0001] The invention relates to the technical field of ore fine grinding and classification technology. Background technique [0002] As mine resources continue to change to "poor, fine, miscellaneous, and difficult", the embedded crystal grain size of valuable minerals becomes finer, and the combination of impurity minerals becomes denser. If the fineness of the grinding product fails to effectively and fully dissociate the useful minerals, it will inevitably lead to the phenomenon that the grade of the concentrate product is not high and the impurities exceed the standard due to the influence of impurities, or a large amount of valuable metal minerals are entrained in the tailings. Affect the recovery rate of valuable metal minerals. [0003] The skarn sulfide ore in Gejiu, Yunnan Province has high sulfur content, dense copper-sulfur combination, and fine crystal grain size embedded in copper minerals. Only when γ -200 The dissociation of the monomers can...

AI Technical Summary

Problems solved by technology

However, both of these methods require increased investment, increased production power consumption and equipment wear and tear.

And often limited by the site, it is difficult to implement

In addition, the grinding media used in the existing grinding machines are all small steel balls. Due to their smooth shape, the grinding efficiency is not ideal.